/*
 * Copyright (c) Kumo Inc. and affiliates.
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <melon/experimental/coro/coroutine.h>

#include <melon/lang/keep.h>
#include <melon/portability/gtest.h>

#if MELON_HAS_COROUTINES

extern "C" MELON_KEEP bool
check_melon_coro_detect_promise_return_object_eager_conversion() {
  return melon::coro::detect_promise_return_object_eager_conversion();
}

struct CoroutineTest : testing::Test {};

TEST_F(CoroutineTest, detect_promise_return_object_eager_conversion) {
  auto const eager =
      melon::coro::detect_promise_return_object_eager_conversion();
  if (melon::kMscVer) {
    EXPECT_EQ(melon::kMscVer < 1925, eager);
  }
  if (melon::kGnuc && !melon::kIsClang) {
    EXPECT_FALSE(eager);
  }
  if (melon::kIsClang) {
    constexpr auto ver = melon::kClangVerMajor;
    if (ver <= 14 || ver >= 17) {
      EXPECT_FALSE(eager);
    } else {
      SUCCEED(); // we sometimes use patched llvm-15/llvm-16
    }
  }
}

#endif
